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MUNGUBA GRANDE DA TERRA FIRME (Eriotheca longipedicellata)
Trade Name
Munguba grande da terra firme
Scientific Name
Eriotheca longipedicellata (Ducke) A. Robyns
Family
BOMBACACEAE
Common Names
Munguba (Brazil); Sumaúma-Vermelha (Brazil); Sumaúma-Da-Terra-Firme (Brazil); Munguba Grande Da Terra Firme (Brazil); Mamorana-Da-Terra-Firme (Brazil)
Description Of The Tree
Botanical Description
The boles are reported to be straight and cylindrical, with commercial lengths from 8 to 23 m, and diameters from 60 to 80 cm. It presents tall buttresses 2.5 to 4 m tall.
Natural Habitat
Eriotheca trees are found in primary and secondary forests, growing on well drained sites.
Non Timber Uses
The wood of this species contains a dark resin which can affect processing operations.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 200 micras or more (large). Tyloses common. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits coarse throughout the ray cell. V Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Axial parenchyma storied. Occasionally prismatic crystals in non-chambered axial parenchyma cells. 3 to 4 cells per parenchyma strand. 4 to 10 rays per mm (medium). Occasionally rays storied. Rays 1 to 4 seriate. Heterogeneous rays and/or multiseriate heterogeneous rays. Body ray cells procumbent with over 4 rows of upright and/or square marginal cells (Kribs-I). Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Odor
Odor and taste are reported to be indistinct.
Color
Heartwood and sapwood are indistinct, the wood is yellowish brown to reddish brown.
Grain
The grain is usually straight or interlocked.
Texture
Medium texture is reported in this species.
Luster
This species is low in luster.
Resistance To Impregnation
The sapwood treats readily. The heartwood is extremely resistant to impregnation.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.45
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.48
Total shrinkage Tangential (Saturated to 0%MC) (%)
9.8
Total shrinkage Radial (Saturated to 0%MC) (%)
4.5
Drying Defects
Ease of Drying: Air seasoning is generally reported to be difficult. Drying Defects: Strong tendency to warp and check, collapse and honeycombing are also reported. Kiln Schedules: Careful drying is recommended.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
2.2
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
895
Stiffness (MOE) 12%MC (kgf/cm²)
106000
Compression parallel to fiber 12%MC (kgf/cm²)
486
Compression perpendicular to fiber 12%MC (kgf/cm²)
60
Shear strength radial 12%MC (kgf/cm²)
83
Janka hardness (side) 12%MC (kgf)
630
Janka hardness (end grain) 12%MC (kgf)
469
Workability
Sawing
Sawing of this species is reported to be rather easy.
Planing
Planning operations are reported to be easy, yielding smooth surfaces.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, frames, panelling, PLYWOOD AND VENEER, PACKING
General Housing
- 10 - Silica in Timbers
Frames
- 16 - Woods of the World
Paneling
- 18 - W3TROPICOS Missouri Botanical Garden
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
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